CryptoAPI (no, this has nothing to do with licensing! YAY!)

[David Elliott]

A while ago I started hacking out an implementation of CryptoAPI.  It sat 
idle for a while and a few days ago I decided to start doing a bit more 
hacking again.

The basics of ADVAPI32's CryptoAPI part is that it does nothing except 
provide an interface for applications to call into CSPs without actually 
loading the CSPs themselves.

At the moment the TESTCSP.EXE with its accompanying CSP.DLL is starting to 
work.  These are from Microsoft's CSPDK and include source code.  I have 
not tried compiling the source with Winelib, that is a later project.

At the moment this code keeps track of which CSPs are loaded and which CSP 
an HCRYPTPROV handle uses.  This allows testcsp to load up csp.dll and do 
a few things, but not everything.

What bothers me though is that it does not get Intenret Explorer to load 
up the RSA CSP.  The LoadLibrary fails because the DllMain function in the 
CSP returns FALSE.  I speculate this has something to do with the fact 
that a real CSP needs to have its image verified before it will load.  Or 
maybe it is something different entirely.

Anyway, still left to be done are to keep track of Key and Hash handles 
(trivially easy) and maybe some other stuff.

As far as putting this into the tree goes, I don't think it would harm 
anything, although I noticed that the GenRandom function had a useless 
implementation in it.  It now has what I believe to be the correct 
implementation, but if loading the CSP fails that CryptGenRadom isn't 
going to work.  Did somebodies appication actually depend on this behavior 
or was it implemented just to have something there?

In any case, this still needs to be cleaned up a bit, but I am hoping to 
get some input on why I cannot load a real CSP as this is all completely 
useless (well, not completely, but for my purposes) if a real CSP cannot 
be loaded.

-Dave
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